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Web Intelligence, IEEE / WIC / ACM International Conference on (2006)
Hong Kong, China
Dec. 18, 2006 to Dec. 22, 2006
ISBN: 0-7695-2747-7
pp: 428-434
Sik Chun Lam , University of Aberdeen, UK
Jeff Z. Pan , University of Aberdeen, UK
Derek Sleeman , University of Aberdeen, UK
Wamberto Vasconcelos , University of Aberdeen, UK
In the Semantic Web, inconsistencies in OWL on- tologies may easily occur. Existing approaches ei- ther identify the minimally unsatisfiable sub-ontologies or calculate the maximally satisfiable sub-ontologies. However practical problems remain; it is not clear which axioms or which parts of axioms should be se- lected for repair, and how to repair those axioms. In this paper, we address this limitation by proposing a fine-grained approach to resolving unsatisfiable ontolo- gies. We revise the axiom tracing technique first pro- posed by Baader and Hollunder, so as to track which parts of the problematic axioms cause the unsatisfiabil- ity. Moreover, we support ontology users in rewriting problematic axioms. In order to minimise the impact of changes and prevent unintended entailment loss, harm- ful and helpful changes are identified and provided as guidelines. Based on the methods described we present a preliminary version of an interactive debugging tool and demonstrate its applicability in practice.

S. C. Lam, W. Vasconcelos, J. Z. Pan and D. Sleeman, "A Fine-Grained Approach to Resolving Unsatisfiable Ontologies," 2006 IEEE/WIC/ACM International Conference on Web Intelligence(WI), Hong Kong, 2006, pp. 428-434.
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